Take Care Of Your Li-On Battery

Lithium-Ion batteries have a finite life, they slowly degrade from the day they are first made. The life of the battery will depend upon how you charge and discharge the battery and the temperature at which the battery is kept. A manufacturer will rate a Notebook battery to the point where it holds 50% of its original capacity. At this point you should consider replacing the battery.

Li-ion batteries are not as durable as nickel metal hybride or nickel-cadmium designs and can be extremely dangerous if mistreated. They are usually more expensive.

Lithium ion batteries can be formed into a wide variety of shapes and sizes, so as to efficiently fill available space in the devices they power, but li-ion batteries are lighter than other equivalent secondary batteries.

The energy is stored in these batteries through the movement of lithium ions. Lithium is the third lightest element, giving a substantial saving in weight compared to batteries using much heavier metals. However, the bulk of the electrodes are effectively “housing” for the ions and add weight, and in addition “dead weight” from the electrolyte, current collectors, casing, electronics and conductivity additives reduce the charge per unit mass to little more than that of other rechargeable batteries. The forte of the Li-ion chemistry is the high open circuit voltage in comparison to aqueous batteries (such as lead acid, nickel metal hybride and nickel cadmium).

One important thing li-ion batteries do not suffer from the memory effect. They also have a low self-discharge rate of approximately 5% per month, compared with over 30% per month in nickel metal hydride batteries and 10% per month in nickel cadmium batteries.

Here is a quick list of Do’s and Don’ts for the care of your Li-On batteries :

Do’s

  1. When you receive a new NoteBook or Tablet PC, leave the battery to fully charge overnight.
  2. Condition a new battery by using it until it is fully discharged, and then re-charge it fully. Doing this once a month will help to accurately calibrate your battery.
  3. Always ensure the battery is recharged as soon as possible after it becomes fully discharged. A battery will be permanently damaged if left for an extended length of time in a fully discharged state.
  4. Remember that a Lithium-Ion battery will slowly deteriorate; a new battery will always perform better than one that is 6-months old.
  5. Remember that the battery half-life is rated for a certain total number of charge/discharge cycles (see your User Manual or Quick Start Guide for the rating). For example, a battery that is rated for 3 hours and 500 charge/discharge cycles, will still be considered as within specification, even if it only lasts for 1 hour 45 minutes after 500 charge/discharge cycles.
  6. Heat is the worst enemy of a battery. Allow plenty of air to circulate around the Notebook/Tablet PC, so that the battery is kept as cool as possible when charging and also when in use. If provided, use the integrated ‘legs’ under the Notebook to raise the notebook and improve air circulation.
  7. Remove the battery if storing for several months (the battery should be at approximately 50% charge or higher).
  8. If you use a NoteBus or if charging your Notebooks or Tablet PCs in a confined space, allow for adequate ventilation in order to keep the batteries as cool as possible.

Don’ts

  1. Do Not – Expose the battery to excessive heat or cold (i.e. outside the range of 10-35 degrees Centigrade ambient).
  2. Do Not – Store the battery in a fully charged state (store batteries with about 50% charge).
  3. Do Not – Allow a nearly flat battery to be unused for more than a month or so. The battery will slowly discharge until it becomes fully discharged and this will permanently damage the battery cells.
  4. Do Not – Charge your Notebook/Tablet PC inside a carry case – the battery may overheat.
  5. Do Not – Charge your Notebook/Tablet PC when stacked on top of each other – the battery may overheat.

Remember : Your battery is slowly degrading all the time, even if it is not used. Keeping your battery as cool as possible will slow down this degradation considerably.


i didn’t realize its different in handling Li-On batteries. i’ve been handling my Omnia and Sixaxis batteries in the old concept. full discharge and full charge at most of the times.. huhu.. changing the ways of doing it now.. thanks Ezine.

How do children think of DADDY..

ALL YOU YOUNG DADS HOW DO YOUR CHILDREN THINK OF YOU !

At 4 Years
My daddy is great.

At 6 Years
My daddy knows everybody.

At 10 Years
My daddy is good but is short tempered

At 12 Years
My daddy was very nice to me when I was young..

At 14 Years
My daddy is getting fastidious.

At 16 Years
My daddy is not in line with the current times.

At 18 Years
My daddy is becoming increasingly cranky.

At 20 Years
Oh! It’s becoming difficult to tolerate daddy. Wonder how Mom puts up with him.

At 25 Years
Daddy is objecting to everything.

At 30 Years
It’s becoming difficult to manage my son. I was so scared of my father when I was young.

At 40 Years
Daddy brought me up with so much discipline. Even I should do the same.

At 45 Years
I am baffled as to how my daddy brought us up.

At 50 Years
My daddy faced so many hardships to bring us up. I am unable to manage a single son.

At 55 Years
My daddy was so far sighted and planned so many things for us. He is one of his kind and unique.

At 60 Years
My daddy is great.

Thus, it took 56 Years to complete the cycle and come back to the 1st stage!

nice forwarded email from my friend Subbash..

Sony answers our questions about the new PlayStation 3

Sony answers our questions about the new PlayStation 3
By Ben Kuchera
The redesigned PS3 hardware has been announced, and you have a ton of questions. We caught up with Sony’s John Koller for answers. What did we find out? There will be a small power brick, this is the new PS3 logo, and the PS3 “Fat” is on the way out. Read on for the dirt on the new face of the PS3.

With the official announcement of the newly redesigned PS3 out of the way, John Koller, Sony’s director of hardware marketing, sat down with us for a few minutes to answer our—and your—pressing questions about the hardware. Can you still change out your hard drive? Will there be a power brick? Let’s find out.

Is this the standard system moving forward?

“This will be the hardware moving forward,” Koller told Ars. “Right now with the 80GB we’re selling down inventory, and this will replace that model.” The 160GB system was always intended to be a limited-time deal. And if you want to buy right now, go ahead—Koller told us the price drop on systems on the store shelves now is effective immediately. We went to the phones to check on that, and most GameStops in our area were not aware there was a price drop in place.

The point is made, though. This isn’t a slimmed-down model, or something that is going to be sitting next to the older systems for long. This is the new face of the PS3, and will soon be the only hardware configuration available at retail.

Can you still upgrade the hard drive?

“Yes, you can. It does not void your warranty. In fact, we encourage it,” Koller told us. He explained that the drive is now located on the front of the system, not the side, and changing out your hard drive will still be easy. “It’s a two-screw process,” he explained.

Don’t worry about being stuck with “just” an 80GB hard drive. The ability to install your own hard drive is still there, and Koller seemed enthusiastic about people modifying their systems in this way.

Will there be a power brick?

“This is a new power cable; it uses a third less power.” Koller answered. He then listed the three big changes made to the hardware: the power consumption has been decreased, the cooling system has been redesigned, and the Cell processor has moved from a 65nm process to a 45nm process.

He also told us that there will be a power brick, although we can expect it to be small. He laughs when I ask about the power brick’s size in relation to the 360’s power supply. “It’s nothing like that,” he assured Ars. There will also no longer be a power button on the back of the hardware; it has instead been moved to the front. [Update: after watching a few unboxing videos, it actually doesn’t look like they’ll be a power brick. There must have been some confusion on this question.]

Why was the ability to install Linux removed from the system?

“There are a couple of reasons. We felt we wanted to move forward with the OS we have now. If anyone wants to use previous models and change the OS, they can do so.” Koller said. “We wanted to standardize our OS.”

Do we need to stop yapping about backwards compatibility?

“It’s not coming back, so let me put that on the table,” Koller says with an air of finality. But it’s all people ever talk about!

“It’s not as big as a purchase intent driver as you may be hearing,” he claimed. “We’ve got such a substantial lineup of titles on the PS3; most people are buying the PS3 for PS3 games. They’ve buying it for PS3 games and Blu-ray movies.”

“That won’t be returning,” he repeats.

How many logos does one system need?

There is the multicolored logo that has been with the PlayStation since the first system, the logo that even Koller referred to as the “Spider-Man Logo,” and the new PS3 logo seen on the top of the new system. So which one should we be paying attention to?

“We’re in the process of replacing the Spider-Man font to the PS3 logo. [The new design] will be the logo moving forward, that will be in place on the hardware and peripherals and software, starting with Uncharted 2.”

The older PS logo on the front of the system has been changed from the multicolored design to silver. Koller says that decision was made to standardize the logo across all the territories the PS3 is sold.

Will Kmart be punished?

Koller laughs at the question. “I don’t know what you’re talking about!” he said. “We value all our retail partners. They just got a little excited.”

Sony is likewise clearly excited about the new design of the system and the price drop. “We expect a material and substantial increase in sales and purchase intent,” Koller told us. Is a $300 system with a smaller design enough to get gamers excited about the PS3? We’ll see, starting in September.

ahah… new slim ps3.. with price cut – sure many will finally join the clan.. but together with price cut, a cost downed unit. my biggest concern would be the loss of Linux compatibility. to most might not think this is essential, but to those who wanted a next-gen console that serves multi-purpose usability, linux gives this. with the exclusion of linux in this slim ps3, we might see lesser support for PS3 linux users. that’s bad for some of us here.. apart from that, a matte black console? i bet the shiny ones looks more exclusive there.. what else was cut down in this new ps3? let’s just wait till someone bought it and disect the thing.. article stolen from ars technica.